<template>
    <el-card class="page-container">
        <template #header>
            <div class="header">
                <span>文章分类</span>
                <div class="extra">
                    <el-button type="primary" @click="dialogVisible = true; title = '添加分类'; clearData()">添加分类</el-button>
                </div>
            </div>
        </template>
        <el-table :data="categorys" style="width: 100%">
            <el-table-column label="序号" width="100" type="index"> </el-table-column>
            <el-table-column label="分类名称" prop="categoryName"></el-table-column>
            <el-table-column label="分类别名" prop="categoryAlias"></el-table-column>
            <el-table-column label="操作" width="100">
                <template #default="{ row }">
                    <el-button :icon="Edit" circle plain type="primary" @click="showDialog(row)"></el-button>
                    <el-button :icon="Delete" circle plain type="danger" @click="delCategory(row)"></el-button> 
                </template>
            </el-table-column>
            <template #empty>
                <el-empty description="没有数据" />
            </template>
        </el-table>

        <!-- 添加分类弹窗 -->
        <el-dialog v-model="dialogVisible" :title="title" width="30%">
            <el-form :model="categoryModel" :rules="rules" label-width="100px" style="padding-right: 30px">
                <el-form-item label="分类名称" prop="categoryName">
                    <el-input v-model="categoryModel.categoryName" minlength="1" maxlength="10"></el-input>
                </el-form-item>
                <el-form-item label="分类别名" prop="categoryAlias">
                    <el-input v-model="categoryModel.categoryAlias" minlength="1" maxlength="15"></el-input>
                </el-form-item>
            </el-form>
            <template #footer>
                <span class="dialog-footer">
                    <el-button @click="dialogVisible = false">取消</el-button>
                    <el-button type="primary" @click="edit"> 确认 </el-button>
                </span>
            </template>
        </el-dialog>
    </el-card>
</template>

<script setup>
import {Edit,Delete} from '@element-plus/icons-vue'
import { ref } from 'vue'
import {findAllCategory,deleteCategory,addCategory,updateCategory} from "@/api/category.ts"
import { ElMessage,ElMessageBox } from 'element-plus'


//删除
const delCategory = (row) => {
    //删除确认
    ElMessageBox.confirm('确定要删除吗？','删除确认')
    .then(async ()=>{               //点击确定按钮  的操作
        let response = await deleteCategory(row.id)
        init()
        if(response.data.code == 1){
            ElMessage.success("删除成功")
        }else{
            ElMessage.error(response.data.message)
        }
    })  
    .catch()  //点击取消按钮
}





const categorys = ref(null)
//定义变量,控制标题的展示
const title = ref('')

//请求后台数据
const init = async () => {
    let response = await findAllCategory()
    categorys.value = response.data.data
}

init()


//控制添加分类弹窗
const dialogVisible = ref(false)

//添加分类数据模型
const categoryModel = ref({
    categoryName: '',
    categoryAlias: '',
    createUser: JSON.parse(localStorage.getItem('userInfo')).userId
})

//编辑分类
const update = async () => {
    let response = await updateCategory(categoryModel.value)
    if(response.data.code == 1){
        ElMessage.success('编辑成功')
        dialogVisible.value = false
        init()
    }else{
        ElMessage.error(response.data.message)
    }
}


const edit = () => {
    console.log('========',title.value)
    if(title.value == '编辑分类'){
        //编辑操作
        update()
    }else{
        //增加操作
        add()
    }
}

//添加分类
const add = async () => {
    let response = await addCategory(categoryModel.value)
    if(response.data.code == 1){
        ElMessage.success('增加成功')
        dialogVisible.value = false
        init()
    }else{
        ElMessage.error(response.data.message)
    }
}








//添加分类表单校验
const rules = {
    categoryName: [
        { required: true, message: '请输入分类名称', trigger: 'blur' },
    ],
    categoryAlias: [
        { required: true, message: '请输入分类别名', trigger: 'blur' },
    ]
}




//展示编辑弹窗
const showDialog = (row) => {
    dialogVisible.value = true; 
    title.value = '编辑分类'
    //数据拷贝
    categoryModel.value.categoryName = row.categoryName;
    categoryModel.value.categoryAlias = row.categoryAlias;
    //扩展id属性,将来需要传递给后台,完成分类的修改
    categoryModel.value.id = row.id
}


//清空模型的数据
const clearData = () => {
    categoryModel.value.categoryName = '';
    categoryModel.value.categoryAlias = '';
}


</script>

<style lang="scss" scoped>
.page-container {
    min-height: 100%;
    box-sizing: border-box;

    .header {
        display: flex;
        align-items: center;
        justify-content: space-between;
    }
}
</style>